1.

From points on the circlex^(2) +y^(2) =a ^(2) ,tangents are drawn to the hyperbolax^(2) - y^(2) =a^(2)The locus of the midpoints of chords of contact is

Answer»

`(X^(2) +y^(2)) ^(2) =a^(2) (x^(2) - y^(2)) `
`(x^(2) -y^(2)) ^(2) =a^(2) (x^(2) + y^(2)) `
`a^(2) (x^(2) +y^(2)) ^(2) = (x^(2) - y^(2)) `
`a^(2) (x^(2) - y^(2)) ^(2) = (x^(2) + y^(2)) `

ANSWER :B


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